Mother, model and muse: Beyonc stars in the fall/winter 2012 campaign for House of Dereon

One of the three ads, released today on the label's Facebook page, shows her in a split-to-the thigh, high-waist maxiskirt worn with gold-capped black platform ankle boots.

The distressed leather jacket and fedora hat, pushed back off her face, complete the rock'n'roll look, which she pulls off effortlessly.

The rest of the images are no less daring. Any woman who has even considered a dress with cutaway panels knows how unforgiving it can be – the fact that Beyonc wears one so well (with flat shoes, no less) demonstrates how toned her body must be.

The third image in the series sees the star, who is married to Jay-Z, rock slim-cut printed trousers with those towering gold-capped boots.

Sensational: The superstar singer, 30, works a series of midriff-baring looks – despite having only given birth to baby daughter Blue Ivy just seven months ago

In addition to shooting the campaign for her label, Beyonc has also been back in the studio, and this past week announced that she has donated album track I Was Here to World Humanitarian Day.

The singer film a video for the track at the United Nations General Assembly Hall in New York City in front of a live audience on August 19.

'We all see the headlines and we think what can I really do to help', she said.

'World Humanitarian Day is an opportunity for all of us to work together to make a difference. This is our time to leave our mark on the world and show that we were here and we care.'